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http://dx.doi.org/10.5392/JKCA.2011.11.5.138

Comparison of Adult and Child's Speech Recognition of Korean  

Yoo, Jae-Kwon (덕성여자대학교 전산정보통신학과 지능형 멀티미디어 연구실)
Lee, Kyoung-Mi (덕성여자대학교 컴퓨터학과)
Publication Information
The Journal of the Korea Contents Association / v.11, no.5, 2011 , pp. 138-147 More about this Journal
Abstract
While most Korean speech databases are developed for adults' speech, not for children's speech, there are various children's speech databases based on other languages. Because there are wide differences between children's and adults' speech in acoustic and linguistic characteristics, the children's speech database needs to be developed. In this paper, to find the differences between them in Korean, we built speech recognizers using HMM and tested them according to gender, age, and the presence of VTLN(Vocal Tract Length Normalization). This paper shows the speech recognizer made by children's speech has a much higher recognition rate than that made by adults' speech and using VTLN helps to improve the recognition rate in Korean.
Keywords
Speech Recognition; Comparison of Adult and Children's Speech; HMM; VTLN;
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